GCN Circular 20761

V.M.  Lipunov, T.Pogrosheva, S.Kobelev,  V.Shumkov, E. Gorbovskoy, 
N.Tyurina, P.Balanutsa, O.Gress, V.Kornilov, A.Kuznetsov,
M.I.Panchenko, A.V.Krylov, I.Gorbunov
Lomonosov Moscow State University, Sternberg Astronomical Institute

D.Buckley,
  South African Astronomical Observatory

N.M. Budnev, O. Gress, K. Ivanov, S.Yazev
Irkutsk State University

R.Podesta, C.Lopez, F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA) , National University of San
Juan, Argentina

H. Levato, C. Saffe
Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),
San Juan, Argentina

R. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu
The Instituto de Astrofisica de Canarias

A. Tlatov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory

V.Yurkov, Yu.Sergienko, A.Gabovich
Blagoveschensk Educational State University, Blagoveschensk

MASTER OT J072511.84-881702.0 discovery - PSN in cluster's galaxy

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic 
Net", Advances in Astronomy, 2010, 30L )
  discovered OT source at (RA, Dec) = 07h 25m 11.84s -88d 17m 02.0s on 
2017-02-22.81740 UT.

The OT unfiltered magnitude is ~19.0m (mlim=20.2).
The OT is seen in 4 image. There is no minor planet at this place.

This PSN is in 12" from bright galaxy (USNO B1 0017-0004125, 
B2=15.9,R2=15.3). There is a cluster of galaxies in this area.

We have reference image on 2015-04-15.98271 UT with  unfiltered m_lim= 
20.6m.

Spectral observations are required.

http://master.sai.msu.ru/static/OT/MASTEROTJ072511.84-881702.0.jpg